208808215

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{12613}}^1$

素因数の和:12679

約数の個数: 32

約数和(自身を含む): 319689216

約数和(自身を除く): 110881001

約数列:

[1, 5, 7, 11, 35, 43, 55, 77, 215, 301, 385, 473, 1505, 2365, 3311, 12613, 16555, 63065, 88291, 138743, 441455, 542359, 693715, 971201, 2711795, 3796513, 4856005, 5965949, 18982565, 29829745, 41761643, 208808215]

約数ペア:

[(1, 208808215), (5, 41761643), (7, 29829745), (11, 18982565), (35, 5965949), (43, 4856005), (55, 3796513), (77, 2711795), (215, 971201), (301, 693715), (385, 542359), (473, 441455), (1505, 138743), (2365, 88291), (3311, 63065), (12613, 16555)]